Physics ideas - gravity, mass, weight, force

The General Theory of Relativity tells us gravity is not a force, gravitational fields don't exist. Objects tend to move on straight paths through ... (2021)

What If Our Understanding of Gravity Is Wrong? Dark matters (2021)

ScienceClic English 228K subscribers How to faithfully represent general relativity ? Is the image of the rubber sheet accurate ? What is the c... (2021)

Albert Einstein taught us that gravity is not a force. But what does this really mean? In this video I explain the difference between mass and weig... (2020)

WIRED 6.29M subscribers Astrophysicist Janna Levin, PhD, is asked to explain the concept of gravity to 5 different people; a child, a teen, a c... (2020)

We asked four physicists why gravity stands out among the forces of nature. We got four different answers. (2020)

Theoretical physicists have known since the 1930s that quantum gravity is necessary to bring order into the laws of nature, but 80… Albert... (2020)

New observations of extreme astrophysical systems have “brutally and pitilessly murdered” attempts to replace Einstein’s general theory of relativi... (2018)

Why an Old Theory of Everything Is Gaining New Life. For decades, physicists have struggled to create a quantum theory of gravity. Now an approach... (2018)

We learn it at high school: release two objects of different mass in the absence of friction forces and they fall down at the same rate in Earth’s ... (2018)